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Circular studs embellished her clutch bag complemented her dangling disc earrings that winked in the bright lights of the streets.

Gone are the days that the popular party girl would spend weekends recovering from a night-after-night of elite showbiz events.

Moss be a model: Swishing her long straight golden locks to the side, Kate made an ultra glam arrival when she sauntered out of her ride and into the A-list venue

The reformed party-lover has reportedly kicked her drinking habits for over a year now and having turned 45 recently in a more mature and composed fashion.

It's claimed the lifestyle change has had a real effect on her appearance and her outlook, according to insiders.

A source told The Sun on Sunday: 'Kate is like a new woman and a much better version of herself. She is focused, professional and glowing with health.'

'Everyone is amazed at how well she has done in not drinking for a whole year, considering what she used to be like. But she has found it easier as time has gone on.'

Moss be style: Circular studs embellished her clutch bag complemented her dangling disc earrings that winked in the bright lights of the streets

Model Kate, who is dating Count Nikolai, has one daughter Lila, 16, whom she raises with CEO and co-founder of Dazed Media Jefferson Hack.

Despite having been at the top of the modelling spheres for three decades, Kate claimed her daughter has taught her so much about beauty.

'She teaches me everything,' she told Harper's Bazaar late last year. 'Lila and her friends follow all the beauty blogs and Instagram accounts, and she'll be like, "Mum, you have to try this, it's amazing what they can do now."

'She does all that contouring and stuff, which I’m sure they do to me when I’m at work, but I never pay any attention. I’m too busy talking.'

Throwback: Gone are the days that the popular party girl would spend weekends recovering from a night-after-night of elite showbiz events (pictured in New York City, January 1995)